GUIDE TO EXPLOSION PROTECTION Ex-PROTECTION CONCEPTS CATEGORIES / PROTECTION LEVELS / ZONES Category EPL (CENELEC) (IEC) Types of protection of electrical equipment for explosive atmosphere of flammable gases, vapours, mists or dusts (HRN/EN/IEC 60079-0) M2, 2G Mb, Gb Flameproof d HRN/EN/IEC 60079-1 M1, 1G, 3G (*) Ma, Ga, Gc (*) M2, 2G, 3G Mb, Gb, Gc px, py, pz Pressurized HRN/EN/IEC 60079-2 2D, 3D (*) Db, Dc (*) Symbol Powder filling HRN/EN/IEC 60079-5 q M2, 2G Mb, Gb Oil-immersion HRN/EN/IEC 60079-6 o M2, 2G Mb, Gb Increased safety HRN/EN/IEC 60079-7 e Intrinsic safety HRN/EN/IEC 60079-11 i M2, 2G 3G (*) M1, M2, 1G, 2G, 3G 1D, 2D, 3D Mb, Gb Gc (*) Ma, Mb, Ga, Gb, Gc Da, Db, Dc nA HRN/EN/IEC 60079-15 Type of protection ‘n’ 3G nC Gc nR Encapsulation HRN/EN/IEC 60079-18 m M1, M2, 1G, 2G, 3G 1D, 2D, 3D Ma, Mb, Ga, Gb, Gc Da, Db, Dc Protection by enclosures HRN/EN/IEC 60079-31 t 1D, 2D, 3D Da, Db, Dc Special protection prIEC 60079-33 (**) s M1, M2, 1G, 2G, 3G 1D, 2D, 3D Ma, Mb, Ga, Gb, Gc Da, Db, Dc Areas Categories (ATEX) EPL (IEC) M1 M2 1G, 1D Other than mines - II 2G, 2D 3G, 3D EPL – Equipment Protection Level Category EPL (CEN) (IEC) Types of protection of non-electrical equipment for explosive atmosphere of flammable gases, vapours, mists or dusts (HRN/EN 13463-1/ prIEC 80079-36 (**)) Standard Concept Symbol HRN/EN 13463-2 Flow restricting HRN/EN 13463-3 Flameproof Constructional safety Control of ignition sources Liquid immersion HRN/EN 13463-5 prIEC 80079-37 (**) HRN/EN 13463-6 prIEC 80079-37 (**) HRN/EN 13463-8 prIEC 80079-37 (**) HRN/EN/IEC 60079-2 Pressurized 3G, 3D fr / d M2, 2G / c M2,1G, 2G, 3G 1D, 2D, 3D b M2, 1G, 2G, 3G 1D, 2D, 3D k M1, M2, 1G, 2G, 3G 1D, 2D, 3D Mb, Ga, Gb, Gc Da, Db, Dc Mb, Ga, Gb, Gc Da, Db, Dc Ma, Mb, Ga, Gb, Gc Da, Db, Dc p M2, 2G, 2D 3G, 3D / (*) Extension of scope in the next edition of standard (**) Standard is in preparation Temperature Class Maximum Surface Temperature T1 T2 T3 T4 T5 T6 450 °C 300 °C 200 °C 135 °C 100 °C 85 °C IIIA Combustible flyings IIIB Non-conductive dust IIIC Conductive dust Degrees of protection IP-code First Second numeral numeral Ta=(-35) / (+50)°C HREx T 09.321X Marking of group, category and applied protection concept Use cable with temperature resistivity: >90°C Use screws with yield stress >800N/mm2 Annex IV Annex V Protection against solid objects >2,5 mm Protection against solid objects >1 mm Dust protected Dust tight Protection against vertically dripping water - 2 Protection against dripping water (15° tilted) - 3 Protection against spraying water (angle up to 60°) - 4 Protection against splashing water from any direction - 5 6 Protection against water jets Protection against powerful water jets 7 Temporary immersion (0,15m/1m; 30 min) IIC Hydrogen, Acetylene - 8 Continuous immersion depth >1 m II 2 G Standard ambient temperature (-20/+40°C) unless stated on labe ExNB acronyms and certificate number Marking according to standard EPL (IEC) Ex d mb IIB T5 Gb Warning markings Electrical equipment category 2 and M2 and internal combustion engines Annex III Annex IX Annex VII Annex VI Conformity assesment annexes III - Type examination (B) IV - Production quality assurance (D) V - Product verification (F) VI - Conformity to type (C) 17025 - HAA 1 - Notified body (ExNB) identification number if involved in production control stage Non-electrical equipment category 2 Equipment category 3 Annex VIII Annex VIII VII - Product quality assurance (E) VIII - Internal control of production (A) IX - Unit verification (G) 1120/07 3115/07 Ex-Agencija’s services: Ex-equipment testing and determination of the explosive properties of flammable media Ex-equipment certification Technical supervision of plants with hazardous area Technical supervision of the quality management in production, repair & overhaul, inspection & maintenance and installation of Ex-equipment Personnel education (Ex-Training) & publishing (Ex-Bilten) Management Systems Certification (ISO 9001; ISO 14001, ...) Ex t IIIC T90°C Db TECHNICAL SUPERVISION Regulations of minimum safety requirements and worker’s health protection, and technical supervision of plants, equipment, installations and apparatus in hazardous areas (HR OJ No. 39/06, 106/07) EU Directive 1999/92/EC (ATEX 137) TECHNICAL SUPERVISION by authorized body (Ex-Agency) include PLANTS Communicate a technical documentation to a Notified Body MA R K ET 45011 - HAA 3 4 5 6 - Ethylene PRODUCTION - according to Regulation of equipment and protective systems HR OJ No. 34/10 (EU Directive 94/9/EC, ATEX95) Annex IX Protection against solid objects >12,5 mm (finger protection) IIB CONFORMITY ASSESMENT Annex III - Propane II 2 D Equipment category M1, 1 and Protective systems 2 Protection concept E-1/08 II 2(1)G Ex de [ia] IIC T5 Gb II 2(1)D Ex tb [ia] IIIB T95oC Db Protection against solid objects >50 mm (hand protection) Ex-MARKS Ser. Br.: 128-5/09 Pmax= 50W f= 50 Hz - IIA Dust - Flammable - Gas ac 1 Methane Category Symbol of explosion protection Un=230 V Description of protection I Group Ratings Tip: ABC 825 Continuosly, long periods or frequently Likely to occur, occasionally Not likely to occur, short period only Representative Gas Ex-symbol Product identification 0, 20 1, 21 2, 22 Gas Group HR - Conformity symbol (NN 18/11), EU symbol N&N d.o.o. 10000 Zagreb Splitska, HR / IP - PROTECTION Dust Groups ATEX Marks N / Temperature Class / group Ex-EQUIPMENT MARKING Manufacturer’s name and address Explosive atmosphere Ma Mb Ga, Da Gb, Db Gc, Dc Mining - I (*) Extension of scope in the next edition of standard (**) Standard is in preparation Type of protection Zones Dust - Flammable - Gas Concept Gas Group Max. surface temperature Temperature Class Standard Dust Group Type of protection Area classification (HRN EN 60079-10-1/ -2) Electrical power equipment (HRN EN 60079-0) Electrical instrumentation equipment (HRN EN 60079-0) Electrical installations of power equipment (HRN EN 60079-14) Electrical installations of instrumentation equipment (HRN EN 60079-14) Non-electrical equipment and installations (HRN EN 13463-1) and technical report is issued. ACTIVITIES Repair (HRN EN 60079-19) Installation (HRN EN 60079-14) Maintenance (HRN EN 60079-17) of Ex-equipment and technical report is issued. Ex-Agencija AGENCY FOR EXPLOSIVE ATMOSPHERE Baštijanova bb, 10001 Zagreb - Croatia Phone: + 385 1 3667 260; + 385 1 3667 157; Fax: + 385 1 3667 262 e-mail: [email protected] www.ex-agencija.hr
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